Test Your Knowledge on Dooryard Citrus!

BJ's Dooryard Citrus Quiz #1
 

1. Little white circular trails in the leaves of your citrus trees mean you have?
  • a virus
  • a fungal disease
  • insect damage
2. What may cause fruit to split?
  • inconsistent watering
  • over fertilization
  • a fungus
3. Why do citrus trees not bloom?
  • lack of sunlight
  • lack of fertilization
  • lack of water
4. What is the normal age of a young citrus tree to bloom?
  • 1 year
  • 2-5 years
  • 7-10 years

5. How many applications of fertilizer per year are sufficient for mature-bearing trees on well-drained soils?

  • 2 applications
  • 3 applications
  • 4 applications

6. What is the rule of thumb determining the area to be fertilized around a citrus tree?

  • 1 foot from the trunk of tree
  • twice the diameter of the tree canopy
  • very close to the trunk of tree

7. What is the targeted soil pH for citrus?

  • between 3.5 and 4.5
  • between 4.5 and 5.5
  • between 5.5 and 6.5

8. Soil pH can be increased by an application of?

  • copper
  • lime
  • magnesium

9. Citrus scab is a disorder with unsightly corky growths on leaves and fruit.  Fruit on these trees

  • are safe to eat
  • are not safe to eat
  • will die before fruit ripens

10. Sooty mold is a common disorder where black superficial growths are found on most any plant part.  What should you do to reduce it?

  • Spray with a fungicide.
  • Nothing. Once citrus gets it, nothing can be done.
  • Treat for the insects to reduce high levels of honeydew build-up.

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Correct answers:

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